ACRS Subcommittee Meeting Preliminary Agendas

Thermal-Hydraulic Phenomena

November 19-20, 2003

11545 Rockville Pike, Rockville, MD (Caruso), 8:30 a.m., Room T-2B3.

The Subcommittee will discuss the ongoing development by the Office of Nuclear Regulatory Research of the
TRAC/RELAP Advanced Computational Engine (TRACE). This is an advanced nuclear reactor thermal-hydraulic systems
analysis computer code, which is intended to replace several other, more specialized reactor analytical tools.

Regulatory Policies & Practices

The Subcommittee will discuss the "LOCA failure analysis and frequency estimation" developed
by the staff in response to the Commission's March 31, 2003, Staff Requirements Memorandum on recommendations
for risk informed changes to 10 CFR 50.46, "Acceptance Criteria for Emergency Core Cooling Systems for
Light-Water Nuclear Power Reactors."

Planning and Procedures

The Subcommittee will discuss proposed ACRS activities and related matters. A portion of this meeting
may be closed pursuant to 5 U.S.C. 552b(c) (2) and (6) to discuss organizational and personnel matters that
relate solely to internal personnel rules and practices of ACRS, and information the release of which would
constitute a clearly unwarranted invasion of personal privacy.